Making Changes
If you make any changes to these resources, you'll have to quit
XMosaic, load the changes into the X server
(using xrdb -merge ~/.Xdefaults), and restart
XMosaic for them to
take effect.

Your ~/.mailcap file defines the tools that
will be used to display the data downloaded from the Net.
On the IUS Suns you will probably want to use a .mailcap file like
the one below.

Displaying Images
For TIFF
images you should use xv, but for almost any other format
xli is much faster. However, for URT images it's not clear
which program to use. To be consistent with other image formats you might
prefer xli, but sometimes URT image files are really
animations, and then only getx11 can display them. It's up to
you, if you prefer xli then delete the line that begins
image/x-urt. ( xli source is available)

Feel free to change this file to suit your needs, but be aware that
Mailcap files are parsed from top to bottom. So make sure you put any
generic patterns (e.g., image/*) after the list of
exceptions. Otherwise the exceptions will never match, and your special
viewers will not be used.